#include <stdio.h>
int b;
int func(int a) {

	switch (a) {
	case 1: b = 30;
	case 2: b = 20;
	case 3: b = 16;
	default: b = 0;
	}
	return b;
}

int main() {
	func(1);
	printf("%d", b);
}


